Facility for producing sanitary hot water for congregate housing

Abstract

The invention relates to a facility for producing sanitary hot water for congregate housing ( 1 ) that comprises a plurality of water heaters ( 2 ) each intended to equip a plurality of individual dwellings ( 2 ) in the housing ( 1 ). Each water heater includes a tank ( 3 ) containing a fluid to be heated, each dwelling ( 2 ) being further equipped with at least one air extraction duct ( 4 ), in particular in the technical rooms ( 5 ), connected to an air extraction network ( 8 ) that is common to the different dwellings ( 2 ). Each dwelling further includes a heat exchange means ( 10 ) adapted for exchanging heat between the extracted air flowing in the air extraction duct ( 4 ) and the fluid contained in the tank ( 3 ) so as to heat the fluid in order to produce sanitary hot water.

1 . Facility for producing sanitary hot water for congregate housing characterized in that a plurality of water heaters, intended to equip a plurality of individual dwellings of the housing, each water heater comprising a tank within which is stored a fluid to be heated, each dwelling being further equipped with at least one air extraction duct connected to an air extraction network common to the various dwellings, each dwelling further comprising heat exchanging means adapted to exchange heat between the extracted air flowing through the air extraction duct and the fluid contained in the tank, so as to heat the fluid in order to produce sanitary hot water, the air extraction network common to the various dwellings being equipped with at least one fan capable of creating a negative air pressure in the said extraction network, so as to carry out the air extraction from every dwelling. 
     
     
         2 . Facility according to  claim 1 , the heat exchange means comprise a thermodynamic circuit within which flows a coolant fluid, the thermodynamic circuit comprising an evaporator adapted to exchange heat with the extracted air, a compressor, an expander, and a condenser adapted to exchange heat with the fluid contained in the tank. 
     
     
         3 . Facility according to  claim 2 , the condenser is located inside the tank of the water heater, in order to exchange directly heat with the fluid contained in the tank. 
     
     
         4 . Facility according to  claim 1 , the heat exchange means comprise a secondary circuit of heat exchange within which flows a coolant fluid, passing through the condenser so as to exchange heat with the coolant fluid, the secondary circuit further comprising a heat exchanger located inside the tank of the water heater, so as to exchange heat with the fluid contained in the tank. 
     
     
         5 . Facility according to an air injection network common to the various dwellings, each dwelling being equipped with a heat exchanger of the double flow type, wherein injected airflow in the dwelling and coming from the air injection network exchanges heat with the airflow extracted from the dwelling. 
     
     
         6 . Facility according to  claim 5 , the heat exchanger of the double flow type is located upstream of the heat exchange means between the extracted air and the fluid contained in the tank, in the flow direction of the extracted air. 
     
     
         7 . Facility according to recycling means allowing to direct part of the injected air from the air injection network, directly into the air extraction network, upstream of the heat exchange means in the flow direction of the extracted air. 
     
     
         8 . Facility according to, the air injection network common to the various dwellings is equipped with at least one fan capable of carrying out the air injection of each dwelling.